Page cut-off device for ink fountains



H. A. W. WOOD. PAGE CUT-OFF DEVICE FOR INK FOUNTAINS. APPLICATION FILED Dsc. I9, IaII. IIENEwEn Dic. I6, 1921.

Ll '7. Patented July 4 922.

H. A. w. woon.

PAGE CUT-OFF DEVICE FOR INK FOUNTAINS. APPLICATION F1LEDYI1EC.19.191I. RENEWED DEC. 16,1921.

Lgg@ 1 7 Patented July 4, 1922..

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HENRY A. WISE WOOD, OF NEW YORK, N. Y., ASSIGNOR TO WOOD NEWSPAPER MACHINERY CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF 'VIR- GINIA.

PAG-E CUT-OFF DEVICE FOR INK FOUNTAINS.

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Application le December 19, 1917, Serial No. 207,976. Renewed December 16, 1921.

To @ZZ whom t may concern:

Be it known that I, HENRY A. WISE Woon, a citizen of the United States, residing at New York, in\the county of New York and State of New York, have invented a newand useful Page Cut-Off Device for Ink Fountains, of which the following is a speciication.

It is sometimes necessary to print on webs narrower than full width in web printing presses, as for instance, as in the case of a double width press to print a web one, two or three pages wide, that is, one-quarter, one-half or three-quarters the width ofthe web. In order to do this the supply of' ink for the part of the cylinder not being used has to be cut off. It is customary to carry on hand an eXtra supply of inking rolls with the composition thereof cut off for a distance of one, two or three pages in width in order to avoid supplying .ink to that portion of the ductor rolls and carrying it from thefountain roll to the ink drum. This is disadvantageous because it requires the employment of considerable time and labor to remove one ductor and substitute another and necessitates the carrying of an extra supply of rollers which can be used for no other purpose.

This invention is designed to avoid these difliculties, and the principal obJect thereof is to provide a devlce within the fountain itself for cutting ofl the color from any one or more of the sectlons of the fountain roll before it delivers the ink out of the fountain so that only the necessary amount of ink will be delivered and no modification of the ductor will be necssary. The device can be used on constant feed ductorless ink motions.

Reference is to be had to the accompanying drawings, in whichA Fig. 1 is a diagram illustrating a preferred form ofthis invention, and showing the inking of three pages with the fourth page cut oft` Fig. 2 is a plan of the ink fountain with its rolls, some parts being partly broken away;

Fig. 3 is a longitudinal sectional view of the same on the line 3--3 of Fig. 2;

Fig. 4 is an end elevation of the ink fountain on enlarged scale;

Figs. 5 and 6 are sectional views still further enlarged on the lines 5-5 and 6 6 re- Specification of Letters Patent.

Patented July 4t, 11922.

serial No. 522,953.

spectively of Fig. 2 showing the cut off mechanism in its two eXtreme positions, and

Fig. 7 is a fragmentary sectional view showing a modification.

The invention is shown as applied to an ink fountain 10 of ordinary construction provided with the usual fountain roll 11 delivering ink to an ink drum 13 and from there through a form roller 14 to the plate cylinder 15. This plate cylinder is shown as of double width, that is, capable of taking four plates 16, each of a page width, three such plates being shown in position and the fourth space being shown vacant. It will be understood, of course, that the Vinvention is applicable no matter how many plates are in positionv or what is the position of the omitted plates.

Fig. 1 indicates the result to be obtained, that is the application of color` only on the area of th'e rolls 13 and 14 that correspond with the parts of the cylinder 15 that are provided with printing plates or other printing surfaces. This is indicated by the shaded portions on these rolls and the fact is also indicated by the shaded portion on the ink fountain roll 11. This roll itself in its area that contacts with the roll '13 is provided with ink only on the proper portion to ink the right areas on that roll.

The fountain is shown as provided with a back 20 of substantially the usual construction. The back 20 is supported by pivot pins 26 on which swing blocks 27 which are attached to the back 20. They are swung over when it is desired to open the fountain for filling, cleaning, etc. A blade 21 is attached to and held by a bar 22 extending; as does the blade, the entire length of the back. The back is provided with adjusting keys 23 for engaging theblade v21 and adjusting it toward and from the fountain roll 11. As is well understood in this art the edge of this blade 21 is adjusted to just the proper distancefrom the fountain roll 11 to enable a film of ink of the proper thickness to be carried by its surface into contact with the ink drum 13. The bar 22 is clamped to the back 20 and the blade 21 lis held in fixed position by headed studs 24: extending up from below. These headed studs areprovided with enlarged necks Awhich serve as guides for cut-off plates 25.

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-25 yagainst the roll 11.

25 to permit of freedom of movement of the blade 2l for its usual regular adjustment.

The plates themselves are provided with slots 26 in which these necks are contained and they rest on the projecting edges of the heads 24. In the form shown there are four of these plates 25 separately arranged and independently adjustable and capable of moving from the position shown in Fig. 5 to the position shown inFig. 6. In the former place the plate contacts against the ink fountain roll 11 and prevents any ink being conducted by it up under the regulating blade 21, while in Fig. 6 it is drawn back and has no action at all at that time.

As indicated in the drawings the plate 25 at the left is forced up into the position shown in Fig. 5 and the other three plates are drawn back so that the other threequarters of the fountain has'its usual unmodified action while the left-hand end fails to deliver any ink. l

The way I have shown for controlling these plates is to provide each of them with a rod 30 near each end guided in a projection 31 extending down from the back and having a spring 32 bearing against the projection 31 and the end of the plate 25 so as normally to force the plates forward into the position shown in Fig. 5. The two rods 30 support the cross shaft 33 on -which I have shown two cams 34. lThese 'cams can be turned by a pin wrench, set into a recess 35, back and forth from the position shown in Fig. 5 to that shown in Fig. 6. In the former 'case the spring 32 forces the plate 25 up against the'fountain roll 11. In the latter case the cam compresses this spring and holds the plate back in inactive position.

In Fig. 7 I have shown a slight modiication in the form of an adjusting -nut '37 for adjusting the tension of the spring 32. The centers of the cams 34 are slightly below the centers of the shafts 33 so that the spring 32 will hold the cams tight' in locked position against the fountain back and will also hold them back in the other position.

The operation of the device is as .follows When it is desired to `cut ofi' -ink from certain page or pages in width, pin wrenches are inserted in the holes 35 in the proper cams 34 located in the normal position shown in Fig. 6. The cams are turned over to the positoncshown in Fig. v5 so as to leave the springs 32 free to press that plate As stated, these plates 25 are shaped on the forward edge to conform to the shape of the roll 11 so that they scrape the ink off and prevent it from bein carried into the ink motion. In a simi ar manner, when it is desired to permit the color to flow regularly the pin wrenches again are inserted in the holes in the two cams 34 and these two cams are turned back l to the position shown in Fig. 6.. In this position the center of each cam being below the center line of the shaft 33, the springs v 32 will serve to keep inoperative position.

In this way the fountain. is converted from a full width fountain to three-quarters or one-half or one-quarter width and locked in that condition almost instantaneously, and the time required -to take out the fountain roll and to place a special one in for the purpose intended is entirely eliminated. This also eliminates the necessity of having these one-quarter, one-half or three-quarthe plate 25 locked in ter composition rolls stor'ed around the' herein shown and described, but what I do l 1. In an ink fountain containing a feed roll and regulating blade, a plurality of means operative between the surface of the ink and the blade for shutting off the supply of ink to different parts of the blade, said means abutting against each other at their si-de edges and constituting a continuous series throughout thev length of said blade.

2. In an ink fountain,the combination with-the fountain rolland a regulating ilexilble blade extending-the length thereof, of a plurality of rigid plates independent of said blade but as av whole extending the length thereof, each movable into-two positions, in one of which it prevents the delivery of ink on the face of said roll past the blade.

3. In an ink fountain, the combination with the fountain roll, a regulating blade therefor, and means for adjusting said blade, of a plurality of plates located under said blade but spaced therefrom for preventing the delivery of ink past said blade, whereby said plates do not interfere with the adjust-` ment of saidy blade. 1

4. In an ink fountain, the combination with a fountain roll, vof a bar extending along said roll, a regulating blade supported by sald bar, a series of studs for holding said bar in position, and a plate supported and guided by said studs for preventing the delivery of inkpast saidblade throughout a part of the length of the roll.

5. In an ink fountain, the combination Therefore yI do not wish tol i ,aaaoir with a fountain roll, of a back therefor, a bar extending along said back, a regulating blade supportedand held in position by said bar, means for holding said bar in position, a plate for preventing the delivery of ink past said blade throughout a part of the length of the roll, and means for reciprocating said plate.

G. In an ink fountain, the combination with the fountain roll and the inlr4 drum to which it directly delivers ink, of means located within the fountain itself for preventing the fountain roll from delivering ink to the ink drum along a part of the same, said means comprising a plate movable toward and from contact with the ink fountain roll, and cams for moving said plate and locking it in extreme position.

7. ln an ink fountain, the combination with a fountain roll and regulating blade therefor, of a plate adapted to be moved into position against the ink fountain roll for preventing the delivery of ink into position to be controlled by said blade on a portion of the ink fountain' roll, a pair of rods for guiding said plate, a cam for moving said rods back and allowing them to move forward, and springs for holding the rods forward and yieldingly holding the plate in contact with the fountain roll.

8. ln' an ink fountain, the combination with a fountain roll and regulating blade therefor, of a plate adapted to be moved into contact with the ink fountain roll, a pair of rods connected with said plate, cams -for moving said rods back and allowing them to move forward, a spring for holding the rods forward and yieldingly holding the plate in Contact with the fountain roll, and

a shaft connecting the ends of said rods, the centers of said cams being located below the center of said shaft when the cams are in position to hold the plates back, thus locking it.

9. ln an ink fountain, the combination with a fountain roll and regulating blade therefor, of a plate adapted to be moved into Contact with the ink fountain roll, a pair of rods connected with said plate, cams for moving said rods back and allowing them to move forward, springs for holding the rods forward and yieldingly holding the plate in contact with the fountain roll, and an adjustnut on each rod'to control the tension of said spring.

10. ln an ink fountain containing a feed roll and regulating blade, a plurality of means located above the surface of the ink in the fountain and operative between the surface of the ink and the blade for shutting off the supply of ink to the blade, the said means being independently operative at will to arrest the flow of ink from any de-Y sired portion of the fountain.

11. ln an ink fountain containing a 'feed roll and a flexible blade, the combination of ink regulating screws for adjusting the blade to regulate and vary the color throughout the width of the fountain, and means extending across the fountain independent of said screws for completely arresting the iow of ink from any desired portion of the fountain, whereby the necessity of removin the ink therefrom is avoided.

n testimony whereof l have hereunto af fixed my signature.

' HENRY A. l/VllSlE WD. 

